3SU1050-4BM01-0AA0
RONIS key-operated switch, 22 mm, round, metal, shiny, lock number SB30, with 2 keys, 3 switch positions I>O
- Stock status:
- Call for availability
- Manufacturer:
- Siemens
- Product code:
- 3SU1050-4BM01-0AA0
Main documents
- Product datasheet
- Instruction sheet
- Catalogue
Related products
| Product | |
| Article Number | 3SU1050-4BM01-0AA0 |
| Product Description | RONIS key-operated switch, 22 mm, round, metal, shiny, lock number SB30, with 2 keys, 3 switch positions I>O<II, momentary contact type, actuating angle 2×45°, 10:30h/12h/13:30h, key removal O, possible special locks: SB31, 421, 455 |
| Product family | Actuators and indicators, 22 mm, metal, shiny |
| Product Lifecycle (PLM) | PM300:Active Product |
| Price data | |
| Price Group | 41J |
| List Price | Show prices |
| Customer Price | Show prices |
| Surcharge for Raw Material | see also metal factor (further details are available on the help page) |
| Metal Factor | see also metal factor (further details are available on the help page) |
| Additional Product Information | ||
| EAN | 4011209970908 | |
| UPC | Not available | |
| Commodity Code | 85389099 | |
| LKZ_FDB/ CatalogID | CC-IC10 | |
| Product Group | 5452 | |
| Group Code | R711 | |
| Country of origin | Czech Republic | |
| Compliance with the substance restrictions according to RoHS directive | Since: 01.10.2014 | |
| Product class | A: Standard product which is a stock item could be returned within the returns guidelines/period. | |
| WEEE (2012/19/EU) Take-Back Obligation | Yes | |
| REACH Art. 33 Duty to inform according to the current list of candidates | ||
| SCIP number | Not available | |
Product Description
3SU1050-4BM01-0AA0
The Siemens 3SU1050-4BM01-0AA0 is a highly secure and reliable RONIS key-operated switch, ideal for industrial applications requiring momentary control with multi-position functionality. Its durable design and advanced features ensure efficiency and safety in demanding environments.

Key Features and Specification
- Type: Key-operated switch.
- Panel Cutout Size: 22 mm.
- Shape: Round.
- Material: Metal with a shiny finish.
Lock Details:
- Lock Number: SB30.
- Key Removal Position: O.
- Included Keys: 2 keys.
- Optional Locks: SB31, 421, 455.
- Switching Positions: 3 positions (“I > O < II”).
- Operation Type: Momentary contact.
- Actuating Angle: 2×45°.
- Position Orientation: 10:30h / 12h / 13:30h.
- Lifecycle Status: PM300 (Active Product).
Applications:
Industrial Automation:
- Ideal for temporary control actions in machinery and automated systems.
Process Control Systems:
- Suitable for systems requiring momentary switching with secure key access.
Access-Controlled Environments:
- Restricts operation to authorized personnel with key-based security.
Product Details:
- Product Family: Actuators and indicators, 22 mm, metal, shiny.
- Lifecycle Status: PM300 – Active Product.
- EAN: 4011209970908.
- UPC: Not available.
- Commodity Code: 85389099.
- Catalog ID: CC-IC10.
- Product Group: 5452.
- Group Code: R711.
Summary:
The Siemens 3SU1050-4BM01-0AA0 RONIS Key-Operated Switch is designed for momentary three-position operation, providing secure and reliable control for industrial and automation systems. With its durable construction, precise switching, and key removal restriction, it ensures enhanced safety and functionality for a wide range of applications.
Frequently Asked Questions
What is a Push Button Switch?
✅ A push button switch is an electromechanical device used to activate or deactivate an electrical circuit by manually pressing a button. These switches are available in various designs, sizes, and configurations, making them suitable for industrial automation, machinery, and control panels. Common applications include emergency stop buttons, control systems, and user interfaces.
How Does a Push Button Switch Work?
✅ push button switch A operates by applying pressure to the button or actuator, which compresses an internal spring and moves the electrical contacts. This action either closes or opens the circuit, depending on whether the switch is normally open (NO) or normally closed (NC). Push button switches are commonly used in industrial control systems, machinery, and automation applications for precise circuit activation.
What is the difference between a tactile pushbutton and a detection pushbutton?
✅ Tactile pushbuttons provide physical feedback and are designed for user interaction, often with a click sound. Detection pushbuttons sense positions (e.g., open/closed) without requiring user actuation.
What are the benefits of Siemens pushbuttons?
✅ Siemens pushbuttons offer IP69K durability, global certifications, modern design, intuitive operation, quick installation, and compatibility with AS-i, IO-Link, and PROFINET for advanced communication.
- Durability: IP69K rating ensures high resistance to extreme conditions, including exposure to oils, vapors, and corrosive solutions.
- Certifications: Fully certified for both national and international standards, ensuring reliable compliance with industry regulations.
- Design Flexibility: Available in metal and plastic variants, offering modern aesthetics to suit various applications and environments.
- Ease of Use: Features intuitive haptic feedback and illuminated controls for a seamless and user-friendly operation.
- Quick Installation: Effortless one-handed setup with innovative patented holder designs for faster deployment.
- Advanced Communication: Fully compatible with AS-i, IO-Link, PROFINET, and PROFIsafe technologies for enhanced communication and integration.
- Safety Assurance: ATEX-certified options are available for hazardous environments, ensuring maximum safety in challenging conditions.
Why choose Siemens SIRIUS ACT?
✅ Siemens SIRIUS ACT offers reliable, durable, and intelligent components, combining advanced technology with sleek design for powerful machines and advanced plants.



















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